description RCW 86 (SN 185) Overview
RCW 86 is a supernova remnant located in the southern constellation of Circinus. It is the remnant of SN 185, a stellar explosion recorded by Chinese astronomers in 185 AD, making it the earliest documented supernova in history. Modern astronomical studies have connected the expanding gas shell of RCW 86 to a degenerate white dwarf star that underwent a thermonuclear explosion at this historical location.
help RCW 86 (SN 185) FAQ
What is the historical significance of the RCW 86 nebula?
RCW 86 is the remnant of SN 185, a stellar explosion recorded by Chinese astronomers in the year 185 AD. This connection makes it the earliest documented supernova in human history.
Where is the RCW 86 supernova remnant located in the sky?
RCW 86 is located in the southern constellation of Circinus. Modern astronomical studies use advanced telescopes to observe the expanding debris of this ancient stellar explosion.
How do modern astronomers know RCW 86 is connected to the 185 AD event?
Astronomers connected RCW 86 to SN 185 by studying the remnant's expansion rate and physical characteristics. These modern observations match the astronomical records left by ancient Chinese observers in 185 AD.
What exactly is RCW 86?
RCW 86 is a supernova remnant, which is the expanding cloud of debris left over after a massive star exploded. It sits in the southern sky and provides a rare opportunity to study a historically documented stellar event.
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